Treferig Isha

Treferig Isha is a house of probable 17th-century origins, though it has undergone significant alterations. Originally facing south, the house's orientation changed after the western unit was destroyed; a large porch was subsequently infilled, and a new entrance created on the west side, to the right of the hall fireplace. The front elevation now presents the side of the original porch, the hall to the left which is slightly set back, and a single-story kitchen wing further to the left and also set back, with its own entrance.

The house is constructed of rubble stone, rendered to the front and rear, with slate roofs. A stone stack is visible on the front gable of the hall, and a stone end stack serves the kitchen wing. The first floor of the porch unit features a two-light casement window with a dripstone. The current entrance is a 20th-century door sheltered by a small, open lean-to porch with a corrugated roof. A tiny rectangular stairlight is located near the northwest angle of the hall, at ground floor level. The front of the kitchen wing incorporates a 20th-century door on the right and a window with a timber lintel on the left.

A single-story shed, built against the south face of the porch, features a rubble stone construction, an open west front and a corrugated iron roof. It has a Tudor-arched doorway with voussoirs, a similarly headed window above, and a small square attic window under a dripstone—all now infilled with stone. The rear of the hall displays a three-light casement window with a triangular head offset to the left, and a two-light casement and a single-pane window on the upper story. The south face of the hall retains a timber three-light ovolo-moulded mullioned window, believed to be the earliest dated example in Glamorgan, with a casement window below featuring a segmental yellow brick head. A partially blocked flat-headed three-light window with a hoodmould is located on the rear of the porch. The rear side of the kitchen wing contains a 20th-century multi-pane window under a long timber lintel, which formerly served as a doorway. A small, later 20th-century addition is present at the north end.

The kitchen features a joist-beam ceiling with five small, chamfered beams with broach stops. A fireplace with a timber lintel is situated on the left. The hall is accessed from the kitchen, displaying three deeply chamfered cross beams with broach stops and square joists. The hall’s fireplace is now infilled and capped with a mantlepiece. A doorway, now leading into a cupboard, has a highly ornate timber head, followed by a second timber doorway leading to a cross-corner stone staircase, which in turn has a chamfered Tudor-arched head. An L-shaped planked screen forms a lobby behind the western entrance in the southwest corner of the hall. A doorway also leads south into what was formerly the porch from the lobby, though this is not visible. The porch ceiling is reputedly ornamented with ogee-ovolo moulded beams with curved stops.